Philip lange



(No Model.)

P. LANGE. .ELEGTRIG INDICATOR.

No. 434,154. Patented Aug. 12, 1890.

Fig.1- Fig.2..

CE inesgzs UNITED STATES PATENT OFFICE.

PHILIP LAN GE, OF PIT'ISBURG, PENNSYLVANIA, ASSIGNOR TO THE \VEST-INGIIOUSE ELECTRIC COMPANY, OF SAME PLACE.

ELECTRIC INDICATOR. I

SPECIFICATION forming part of Letters Patent No. 434,154, dated August12, 1890.

Application filed May 15, 1890. Serial No. 351,945.

To all whom, it may concern:

Be it known that I, PHILIP LANGE, a citizen of the United States,residing in Pittsburgin the county of Allegheny and State ofPennsylvania, have invented a certain new and useful Improvement inElectric Indicator and Core for Same, (Case No. 366,) of which thefollowing is a specification.

The invention relates to the construction of indicators for electriccurrents.

The object of the invention is to provide a device which will produce acontinuous de-' flection of an indicatingarm and give equal deflect-ionsfor corresponding changes in the current throughout a considerablerange.

The invention involves especially the construction of the core for asolenoid, and this core is useful for other purposes than indicatingdevices, but will be described in connection therewith. The core isconstructed of sections of magnetizable material separated from eachother longitudinally by spaces and carried by a suitable support.

In the accompanying drawings, Figure 1 shows an electric indicatorinvolving the features of the invention. Fig. 2 is an enlarged View ofthe core.

Referring to the figures, A represents a frame, upon which the parts ofthe instrument 0 are supported.

13 represents a solenoid, designed to be connectod in an electriccircuit, as indicated by the wires 1 and 2. The wire 2 leads to anadjustable resistance-coil C of well-known construction.

The indicating-arm E is carried upon a pivoted beam F. One end of thisbeam carries the core G, and a counterpoise H is suspended from theother end of the beam. The distance to which the core will be drawn intothe solenoid is dependent upon the difference of potential applied tothe coil B.

The core is constructed of sections g, of soft (No model.)

iron, supported at intervals along a rod g. This rod may be ofmagnetizable material, or 5 in some instances it maybe desirable toconstruct it of non-magnetizable material. In practice it is found thata core of this construction will afford an approximately equal pull uponthe beam for equal increments of potential throughout a considerablerange.

A leveling-plumb is shown at K for adjusting the position of theinstrument, so that when at. rest the indicator E will be at the centralpoint p of the index-card P.

I claim as my invention 1. In an electric indicator, a solenoid and acore therefor, consisting of sections of magnetizable material, saidsections being of such length and separated such distances that sev- 6ooral sections maybe contained within the core at any time, and a rigidrod upon which the sections are' supported apart from each other in alongitudinal series, substantially as described. 6 5

2. In an electric indicatoiythe combination of the indicator-arm, thepivoted support therefor, the solenoid, the core carried by said supportand entering said solenoid and consisting of sections of magnetizablcmaterial separated from each other and arranged in a series concentricwith the solenoid. and the counterpoise for the core.

A core for electrical devices, consisting of sections of magnetizablematerial and a stiff rod or support, upon which the sections arearranged in a longitudinal series and separated from each othersubstantially as described.

In testimony whereof I have hereunto subscribed my name this 5th day ofMay, A. D. 1890.

PHILIP LANGE.

Witnesses:

J. E. BoNHAM, J. W. SMITH.

